只需一步,快速开始
牛顿解释岁差存在的矛盾
|小黑屋|手机版|Archiver|Astronomy Forum of Starry Sky ( 浙ICP备16020121号 )
GMT+8, 2025-4-13 00:00 , Processed in 0.106896 second(s), 22 queries .
Powered by Discuz! X3.2
© 2001-2013 Comsenz Inc.